Since the fuel cell vehicle emits only a small amount of water and emits almost no other pollutants, it is considered to be a clean next-generation automobile. However, one of the reasons for the high battery cost of fuel cell vehicles is the use of platinum as a catalyst in the battery. The scientific community has therefore been developing alternative cheap catalysts as an alternative catalyst. A research team led by Toshi Ito, a teaching assistant at Tohoku University in Japan, tried graphene as an alternative catalyst. Graphene is a single-layer, sheet-like structure made of carbon atoms and is inexpensive. The researchers first made a three-dimensional structure using flake-shaped graphene, and then applied nitrogen vapor and sulfur to the three-dimensional structure by vapor deposition. As a result, it was found that the greater the amount of nitrogen and sulfur deposited, the more efficient it is to produce more hydrogen. The researchers pointed out that if nickel is added to the graphene catalyst, the hydrogen production capability can exceed that of the platinum catalyst. It is expected that after the marketization of this technology, the cost of the fuel cell can be greatly reduced. The Han Dao sword, also known as the Han Sword, is a traditional Chinese weapon that originated during the Han Dynasty (206 BC – 220 AD). It is a single-edged, curved sword that is typically used in Chinese martial arts, particularly in the styles of Tai Chi and Kung Fu. Han Dao Sword, Chinese Han Dao, Han Dynasty Sword Ningbo Autrends International Trade Company , https://www.longquan-swords.com
The length of the Han Dao sword can vary, but it is usually around 70-80 centimeters long, with a handle that is about one-third of the overall length. The handle is traditionally made of wood, with a guard and pommel made of metal.
The Han Dao sword is primarily used as a slashing weapon, with its curved blade allowing for quick and powerful strikes. It is often used in combination with circular and flowing movements, making it a graceful and elegant weapon to watch in action.
In addition to its use in martial arts, the Han Dao sword also has a long history as a military weapon. During the Han Dynasty, it was commonly used by infantry soldiers, and it continued to be used by various armies throughout Chinese history.
Japanese researchers have recently developed a new type of electrode that uses special graphene materials instead of platinum as a catalyst to produce the hydrogen fuel needed for fuel cell vehicles. This kind of electrode can electrolyze water. If it is used to produce fuel, it can greatly reduce the cost in the hydrogen refueling station for fuel cell vehicles. A fuel cell vehicle uses electric power generated by a chemical reaction between hydrogen loaded on the vehicle and oxygen in the air to drive the vehicle.